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A Volume-Delay Function for Motorways Taking the Impact of Trucks on Traffic Flow into Consideration

Müller, Stephan and Schiller, Christian (2014) A Volume-Delay Function for Motorways Taking the Impact of Trucks on Traffic Flow into Consideration. In: 93nd Annual Meeting of the Transportation Research Board. Omnipress. 93nd Annual Meeting of the Transportation Research Board, 10.-16. Januar 2014, Washington DC.

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Abstract

Currently in transportation modeling, travel time is the most important factor in decisions regarding transport modes, destinations and routes. The calculation of travel time is deployed by volume-delay functions, a sub-model of route assignment procedure, using the correlation between increasing numbers of vehicles on a road and the road’s restrictive capacity. By investigating existing volume-delay functions, a clear gap is seen, demonstrating that current functions are not suited to reflect the empirically known large impact of trucks on passenger car travel times. This issue becomes crucial when transport models are used to reflect future scenarios where goods transportation is expected to be increased greatly, and when transport models cover passenger and commercial traffic together. This article presents a new volume-delay function which successfully covers trucks’ impact on traffic flow in the case of Germany very well, and with slightly deviations also North America. The function is developed by using ideal-type data for German motorways. The differences of American data (Highway Capacity Manual) and German data (Handbuch für die Bemessung von Straßenverkehrsanlagen) and their implications for volume-delay functions are also discussed.

Item URL in elib:https://elib.dlr.de/87825/
Document Type:Conference or Workshop Item (Poster)
Title:A Volume-Delay Function for Motorways Taking the Impact of Trucks on Traffic Flow into Consideration
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Müller, Stephanstephan.mueller (at) dlr.deUNSPECIFIED
Schiller, Christianchristian.schiller (at) tu-dresden.deUNSPECIFIED
Date:10 January 2014
Journal or Publication Title:93nd Annual Meeting of the Transportation Research Board
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:Omnipress
Status:Published
Keywords:Volume-Delay Function, VDF, Capacity-Restraint Funktion, CR-Funktion, Verkehrsmodellierung, Reisezeit
Event Title:93nd Annual Meeting of the Transportation Research Board
Event Location:Washington DC
Event Type:international Conference
Event Dates:10.-16. Januar 2014
Organizer:Transportation Research Board
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Verkehrsentwicklung und Umwelt II (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Transport Research > Commercial Transport
Deposited By: Müller, Stephan
Deposited On:23 Jan 2014 08:49
Last Modified:13 Sep 2017 21:51

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